It is narrated from Sayyidah Aishah (may Allah be pleased with her) that she said: I said: O Messenger of Allah, I saw you talking with Dihyah al-Kalbi while your hand was on the mane of the horse. He (peace and blessings be upon him) said: "Did you see him?" I said: Yes. He (peace and blessings be upon him) said: "That was Jibril, and he is conveying his greeting of peace to you." I said: And upon him be peace and the mercy of Allah and His blessings; what an excellent companion and what an excellent intimate visitor he is.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19395